Improvements in or relating to electric lamps,申请号GB19370023993-传众专利搜索

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发明名称	Improvements in or relating to electric lamps
摘要
申请公布号	GB477440(A)	申请公布日期	1937.12.30
申请号	GB19370023993	申请日期	1937.05.03
申请人	THE SINGER MANUFACTURING COMPANY	发明人
分类号	F21V17/00;H01R33/975	主分类号	F21V17/00
代理机构		代理人
主权项
地址

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